What’s Vulnerable › Vulnerabilities

CVE-2021-40531

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 33.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-09-06 · updated 2026-06-17
• Weakness: CWE-434

Description

Sketch before 75 allows library feeds to be used to bypass file quarantine. Files are automatically downloaded and opened, without the com.apple.quarantine extended attribute. This results in remote code execution, as demonstrated by CommandString in a terminal profile to Terminal.app.

Affected products

• Sketch: before 75 — fixed in 75

How to fix

Upgrade to a fixed version: Sketch 75. Check the vendor advisory for mitigations.

References

• https://jonpalmisc.com/2021/11/22/cve-2021-40531
• https://www.sketch.com/updates/#version-75
• https://jonpalmisc.com/2021/11/22/cve-2021-40531
• https://www.sketch.com/updates/#version-75

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